diff options
Diffstat (limited to 'usr.sbin/watch/watch.c')
| -rw-r--r-- | usr.sbin/watch/watch.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/usr.sbin/watch/watch.c b/usr.sbin/watch/watch.c index 4d1c38d974db..d594ee0c7e69 100644 --- a/usr.sbin/watch/watch.c +++ b/usr.sbin/watch/watch.c @@ -71,6 +71,7 @@ int opt_interactive = 1; int opt_timestamp = 0; int opt_write = 0; int opt_no_switch = 0; +const char *opt_snpdev; char dev_name[DEV_NAME_LEN]; int snp_io; @@ -164,12 +165,16 @@ open_snp() else mode = O_RDONLY; - for (c = '0'; c <= '9'; c++) { - snp[8] = c; - if ((f = open(snp, mode)) < 0) - continue; - return f; - } + if (opt_snpdev == NULL) + for (c = '0'; c <= '9'; c++) { + snp[8] = c; + if ((f = open(snp, mode)) < 0) + continue; + return f; + } + else + if ((f = open(opt_snpdev, mode)) != -1) + return (f); fatal(EX_OSFILE, "cannot open snoop device"); return (0); } @@ -302,7 +307,7 @@ main(ac, av) opt_interactive = 0; - while ((ch = getopt(ac, av, "Wciotn")) != -1) + while ((ch = getopt(ac, av, "Wciotnf:")) != -1) switch (ch) { case 'W': opt_write = 1; @@ -322,6 +327,9 @@ main(ac, av) case 'n': opt_no_switch = 1; break; + case 'f': + opt_snpdev = optarg; + break; case '?': default: usage(); |